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WM8904ECS/R 数据表(PDF) 164 Page - Wolfson Microelectronics plc |
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WM8904ECS/R 数据表(HTML) 164 Page - Wolfson Microelectronics plc |
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164 / 188 page  WM8904 Pre-Production w PP, Rev 3.3, September 2012 164 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO 7:4 DCS_DAC_WR_ COMPLETE [3:0] 0000 DC Servo DAC Write status [3] - LINEOUTR [2] - LINEOUTL [1] - HPOUTR [0] - HPOUTL 0 = DAC Write DC Servo mode not completed. 1 = DAC Write DC Servo mode complete. DC Servo 3:0 DCS_STARTUP _COMPLETE [3:0] 0000 DC Servo Start-Up status [3] - LINEOUTR [2] - LINEOUTL [1] - HPOUTR [0] - HPOUTL 0 = Start-Up DC Servo mode not completed.. 1 = Start-Up DC Servo mode complete. DC Servo Register 4Dh DC Servo Readback 0 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R90 (5Ah) Analogue HP 0 7 HPL_RMV_SHO RT 0 Removes HPOUTL short 0 = HPOUTL short enabled 1 = HPOUTL short removed For normal operation, this bit should be set as the final step of the HPL Enable sequence. Pop Suppression Control 6 HPL_ENA_OUT P 0 Enables HPOUTL output stage 0 = Disabled 1 = Enabled For normal operation, this bit should be set to 1 after the DC offset cancellation has been scheduled. Pop Suppression Control 5 HPL_ENA_DLY 0 Enables HPOUTL intermediate stage 0 = Disabled 1 = Enabled For normal operation, this bit should be set to 1 after the output signal path has been configured, and before DC offset cancellation is scheduled. This bit should be set with at least 20us delay after HPL_ENA. Pop Suppression Control 4 HPL_ENA 0 Enables HPOUTL input stage 0 = Disabled 1 = Enabled For normal operation, this bit should be set as the first step of the HPL Enable sequence. Pop Suppression Control 3 HPR_RMV_SHO RT 0 Removes HPOUTR short 0 = HPOUTR short enabled 1 = HPOUTR short removed For normal operation, this bit should be set as the final step of the HPR Enable sequence. Pop Suppression Control 2 HPR_ENA_OUT P 0 Enables HPOUTR output stage 0 = Disabled 1 = Enabled For normal operation, this bit should be set to 1 after the DC offset cancellation has been scheduled. Pop Suppression Control |
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